diff mbox series

[v2,69/92] iio: frequency: admv1014: Fix alignment for DMA safety

Message ID 20220508175712.647246-70-jic23@kernel.org (mailing list archive)
State Accepted
Headers show
Series IIO: Fix alignment of buffers for DMA | expand

Commit Message

Jonathan Cameron May 8, 2022, 5:56 p.m. UTC 
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

____cacheline_aligned is an insufficient guarantee for non-coherent DMA
on platforms with 128 byte cachelines above L1.  Switch to the updated
IIO_DMA_MINALIGN definition.

Fixes: f4eb9ac7842f ("iio: frequency: admv1014: add support for ADMV1014")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Antoniu Miclaus <antoniu.miclaus@analog.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
---
 drivers/iio/frequency/admv1014.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/iio/frequency/admv1014.c b/drivers/iio/frequency/admv1014.c
index a7994f8e6b9b..d1ccaa7ed5fe 100644
--- a/drivers/iio/frequency/admv1014.c
+++ b/drivers/iio/frequency/admv1014.c
@@ -127,7 +127,7 @@  struct admv1014_state {
 	unsigned int			quad_se_mode;
 	unsigned int			p1db_comp;
 	bool				det_en;
-	u8				data[3] ____cacheline_aligned;
+	u8				data[3] __aligned(IIO_DMA_MINALIGN);
 };
 
 static const int mixer_vgate_table[] = {106, 107, 108, 110, 111, 112, 113, 114,